Organic titanium epoxy resin catalytic ester cyanate system
A technology of titanium epoxy resin and catalyzed cyanate ester, which is applied in the field of organotitanium epoxy resin catalyzed cyanate ester resin system, which can solve the problem of heat resistance of cured resin, decline in heat and humidity resistance, and shortened storage period of the resin system at room temperature And other issues
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Embodiment 1
[0013] Get 99.99 parts of bisphenol A cyanate ester, heat to 80 ℃ and melt completely, then add 0.01 part of organic titanium modified E44 bisphenol A glycidyl ether epoxy resin (the molar ratio of titanium atom to cyanate ester functional group is 100ppm), and stir well. The DSC reaction peak temperature of the resin system is 269°C. After curing at 200°C for 2 hours, the glass transition temperature of the cured resin is 235°C; after curing at 250°C for 2 hours, the glass transition temperature of the resin is 267°C.
Embodiment 2
[0015] Get 99.9 parts of bisphenol A cyanate ester, heat to 80 ℃ and melt completely, then add 0.1 part of organic titanium modified E44 bisphenol A glycidyl ether epoxy resin (the molar ratio of titanium atom to cyanate ester functional group is 800ppm), and stir well. The DSC reaction peak temperature of the resin system is 230°C, cured at 150°C for 2 hours, the glass transition temperature of the cured resin is 180°C; cured at 200°C for 2 hours, the glass transition temperature of the resin is 232°C; at 250°C After curing for 2 hours at ℃, the glass transition temperature of the resin is 265℃.
Embodiment 3
[0017] Get 99.7 parts of bisphenol A cyanate, heat to 80 ℃ and melt completely, then add 0.3 parts of organic titanium modified E44 bisphenol A glycidyl ether epoxy resin (the molar ratio of titanium atom to cyanate functional group is 1500ppm), and stir well. The DSC reaction peak temperature of the resin system is 186°C, after curing at 130°C for 2 hours, the glass transition temperature of the resin is 141°C; after curing at 200°C for 2 hours, the glass transition temperature of the resin is 227°C; at 250°C After curing for 2 hours, the glass transition temperature of the resin is 259°C.
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